Memory Limits on Login Nodes

Login nodes are shared by all users. To prevent that a user accidentally affects other users by using too much memory, memory usage per user has been limited to currently 30% of the physical memory.

Linux cgroups are used to enforce the limit. You can query the exact value as follows:

blogin1:~ $ cat /sys/fs/cgroup/user.slice/user-$UID.slice/memory.max
121310494720